Steam-generator.



J. H. ROSENTHAL.

STEAM GENERATOR.

APPLICATION FILED .1IR.10. 1913. RENBWED DEU. 26. 1914. 191,152,036, Patented Mar. 16, 1915.

2 SHEETS-SHEET l.

J. H. ROSBNTHAL.

STEAM GENERATOR.

RENEWED DEG. 213. 1914.

APPLICATION FILIID APR. 10. 1913, 11,1 32,036.

:0. l. 92 1T ,n 6 1M n aT ME n m.. 2 lu n e .Tw n@ DL Fig. 3 a similar view showing UNITED STATES PATENT oEErcE.

JAMES' H. ROSE'NTHAL, OE oHIsELHURsT, ENGLAND, AssIGNoit To THE Babcock a wILcOx COMPANY, OE BAYONNE, NEW JERSEY, A CORPORATION OE NEW JERSEY.

STEAM-GENERATOR.

Application filed April 10, 1913,

To all whom t may concern Be it lmown that I, JAMES H. ROSENTHAL, a vsubject of the King of Great Britain, residing at Kemnal Manor, Kemna] Itoad, Chiselhurst, Kent, *'Englan'd, have invented certain new and useful Improvements in Steam-Generators, of which the following is a specification.

This invention relates towater tube steam generators in which the steam generating tubes are arranged at a steep angle, and the front -or main bank arranged in sections composed of tubes connectedat their ends to headers of any well-known type.

The invention will be understood by reference to the ,accompanying drawings in Figure' 1 is a vertical section of a boiler showing one embodiment of my invention; Fig. 2, a similar view of a modiiedform of tube and tube connections which maybe employed in one of the blanks of tubes; and another modi iication of tube connection.

Similar reference numerals indicate'similar parts in the several views.

Referring to Fig. 1 the numeral 1 designates the front wall of the boiler setting;

1 the rear wall; 2 the furnace; and 3 abank of generating tubes inclined upwardly at a steep angle toward the front wall of the setting and extending substantially from the bridge wall 4 to-the roof of the setting. These tubes are arranged in sections and are L'expanded at their lower and upper ends into headers 5 and 6, respectively, well-known type. vided' with hand-hole fittings 7 located opposite the ends of each of the tubes to facilitate cleaning and renewal. The lower headers 5 are connected by nipples, or short tube lengths, to a water drum 8, and the upper headers 6 are connected by tubes 9 with a steam and water drum 10, the ends of the tubes 9 being exposed above the water line and terminating' in a steam drying device 11.

The drums 8 and 10 are connected by a bank of downcomer tubes'12 disposed at a greater angle of inclination to the horizontal than are the tubes of the bank 3. In the triangularspace between banks 3` and 12 a sectional superheater 13, of a well-v known type, is located. In the upper part of the space between the bank 12 andthe rear wall of the setting is located an econo- Specicaton ofLetters Patent.

of any These headers are prot Patented Mar., ic, rais.

Serial No. 760,129. Renewed December 26, 1914. Serial No. 879,230.

mizer comprising tubes 14 connected to cross boxes 15 and 16, the former having a suitable cold water inlet and the latter a hot water outlet.

Suitable baiiiing may be introduced to direct vthe course of the gases from furnace 2. As shown, a baille 17 rests upon the .front row of the tubesof bank 3 and extends upwardly from the lower headers 5 substane tially half-way of the length of the bank. From baille 17 extends a cross baiile 18 to direct the gases across the uptake ends of the tubes of said bank. rllhe tubes ofthe front row of the second or rear bank are inclosed withtiles 19 extending downwardly from the steam and water drum to a baille 20 extending across the triangular space between' the two banks of tubes. of tubes of the bank 12 support aV longitudinal baffle 21 extending upwardly from the water drum 8, so that afterthe gases leave the superheater space they are directed' downwardly among the tubes of the main bank and then' upwardly among the tubes of the rear bankand finally across the economizer to theA outlet 22. A wall 23 extending from the floor up to the water drum 8 prevents the gases escaping below' said drum.

The water from the economizeris led to drum 10 through a suitable connection, passes down the tubes12 into drum, 8, thence into the headers 5 in an `upward* direction through the tubes of bank 3, and thence by the connections 19 into the steam drying space disposed above the water line in drum 10.

In lieu of using straight tubes with embossed tube sheets, as shown in Fig; 1, I may adopt the construction shown in Fig. 2, wherein the tubes of the second or rear bank The back row V are bent radially at their upper and lowery Fig. 3 in which the water drum- 8 is dispensed with and its part in the working of the boiler taken by an extension 5 of the headers 5, hand-hole `fittings 7, being provided opposite each of the tubes of the bank 12.' In this last arrangement the tubes of the bank 12 are straight at their lower ends and can ie aitheri bent or u er en s e en n u bsled tube slibet g P drum 10. 1

on whether an etnstraight at their.

is Orvis not used for the lll@ That I claim and desire to secure by Letters Patent of the United States is 1. A water tube boiler comprising a furnace having a bridge wall, a bank of generating tubes inclined forwardly and eX- tending from the bridge wall to the roof of the setting, headers into which said tubes are expanded, a steam and water drum connected to the upper headers, a. water drum connected to the lower headers, a second bank of tubes connecting said drums. and battles to direct the gases across and among the tubes.

. 2. A water tube boiler comprising a furnace having a bridge wall, a bank of generating tubes inclined forwardly and e-X- tending from the bridge wall to the roof of the setting, headers into which said tubes are expanded, a steam and water drum connected to the upper headers, a water drum connected to the lower headers, a second 4 bank of tubes connecting said drums, and

baffles to direct the gases across and among the tubes, said second bank being at a greater angle to the horizontal than the tubes of the first named bank.

3. A water tube boiler comprising a fui nace'having a bridge wall, a bank of generating tubes inclined forwardly and eX- tending from the bridge wall to the roof ,of the setting, headers into which said tubes are expanded, a steam and water drum connected to the upper headers, a water drum connected to the lower headers, a second bank of tubes connecting said drums, baffles to direct the gases across and among the. tubes, an economizer in the 'upper part of the space at the rear of the second bank of tubes, and an outlet for the gases in the rear wall of the setting whereby the gases are directed across the economizer on their way to the stack.

el. A water tube boiler comprising a bank of main generating tubes inclined upwardly toward the front of the setting, headers intowhich said tubes areexpanded, a steam and water drum connected to the upper headers, a water drum connected to the lowerheaders, a second bank of tubes connecting said drums, baffles todirect the gases upwardly and then across the uptake ends of the main bank of tubes, a baiie on the front row of the rear bank of tubes eX- tending downwardly from the steam and water drum, and a baflie on the rear bank of tubes extending upwardly from said water drum.

In testimony whereof I hereunto sign my name in the presence of two subscribing witnesses.

JAMES H. ROSENTHAL. Titnesses H. l). SMrrH, H. A. WELLING. 

